It is something we thought about a while back but seemed to not have a strong opinion on one way or another. The idea is that it would be a place that we post announcements about the forum, and alert each other when the site is down, or has a spammer hitting us. It could also be an extension of the coffee shop, and allow us to talk about more personal stuff. We would not want to use it as a way of promoting the forum, or taking over in any of it's function. It would likely be a closed group to members of the forum too, and would not be mandatory.

I don't have a Facebook account and don't intend to ever have one.
I check the RPF from time to time and some of the comments on certain build, WIP and various project can get very "Facebooky"...and it's just not my cup of tea